Hi. First of all sorry about my poor english and congratulations about this wonderful app...but...the motive to do i choose other rss newsreader is Why the old news are deleted?, Greatnews has a Cleanup wizard and if you prefer it you can not delete the news so you can access to old news. But with RSSowl each x times the news are deleted. why? why can not i leave them in the program?
Well, the old news are actually not deleted, they are simply not kept =)
I get this question ask about once per day. RSSOwl is not supporting this kind of feature yet. The news show up as they come from the feed.
The next major release of RSSOwl will fix this issue.